Willibald merl



(No Model.) 4 SheetsSheet 1.

. W. MERL- ENGBAVING MACHINE.

No. 532,680. Patented Jan. 15, 1895.

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(No Model.) 4 Sheets-Sheet 2.

W. MERL. ENGRAVING MACHINE.

No.532,680. v I Patented Jan. 15,1895.

(No Model.) 4 Sheets-Sheet 3. W. MERL.

ENGRAVING MACHINE. No. 532,680. Patented Jan. 15, 1895.

(No Model.) r 4 sheets sheet 4.

W. MERL. I

ENGRAVING MACHINE.

No. 532,680. gatenfiued Jan. 15, 1895.

UNrTED STATES PATENT OFFICE.

YVILLIBALD MERL, OF COLOGNE, GERMANY.

ENG'RAVING-MACHINE.

srEorFroATroN forming part of Letters Patent No. 532,680, dated January15, 1895 Application filed October 18, 1894. Serial No. 526,310- (Nomodel.)

To allwhom it may concern).-

Beit known that I, WILLIBALD MERL,a. sub- .ject of the King of Prussia,residing at O0- logne, in the Province of Rhenish Prussia, Kingdom ofPrussia, German Empire, have invented new and useful Improvements inGraving and Cutting Machines, of which the following is a specification.

This invention relates to a machine, by

which the negative of a card, a plan or other, drawing can betransferred to printing plates of stone or metal and directly-engravedso as to be in condition for printing, or stamps, letters, printingstamps and printing plates and the like can be out directly into metalaccording to given patterns.

The invention embodied in the machine is characterized by thecombination with a pantograph of a traveling frame having rollers overwhich travels an endless cord, the upper or oppositely located portionof this cord having a constantly opposite or negative motion being madeto actuate a carriage carrying the prlcker or tool. The connectionbetween the cord and pantograph is effected also by a carriage, which isrectilinearly guided in the.

lower part of the traveling frame.

In consequence of the combined movements which'the pricker or toolreceives in a direct ion back and forth by the frame and to right andleft by the endless cord, the negative of the pattern traveledover bythe tracer of the pantograph is directly produced in the plate restingunder the pricker or in the blank moved by the upper cord carriage infront of a fixed pricker.

The invention is illustrated in the annexed drawings, in which- Figure1' shows aplan view of the machine. Fig. 2 is a longitudinal elevation.an elevation sectioned transversely through the machine table. Fig. 4 isaside elevation of a cutting device. Fig.6 is aside elevation of ,thelower cord carriage. Fig. 6 .is a plan view of Fig. 5. Fig. 7 is a sideelevation of the upper cord carriage. Fig. 8 is a plan view of 'Fig. 7.c

The machine table M is stiffened by suitable iron trimmings and can betleveled by its legs provided with set screws t. Upon this table onstandards '1' rests a frame like sup- Fig. 3 is port G, which on thetracks a carries the traveling frame B and between or within it ontracks I) b the carriage S.

The traveling frame B consists of rectangularly arranged rods g g g gconnected by head plates 1.", k, and is provided at its ends in front ofsaid head plates with pulleys Z l journaled in brackets c c, and overwhich pulleys extends the cord U. The frame is supported in very easymovability on the sharp edged centered rollers 0 0 running in furrows ofthe tracks'a and between its two upper and the lower rods said frameincloses the carriage S, which serves for the reception of the printingplate D to be engraved. The pantograph P,

having its pole atc', is arranged under the support G. i

The pantograph supported in part on rollers m, can be easily moved overthe table plate by means of the tracing arm carrying the tracer said armbeing also suspended from a truck htraveling on a jib or swinging arm 0.To set the pantograph for the various transfer relations the pole 11can'be adjusted on the track T. To allow free movement of the pantographunder the supporting frame G, one corner G'y' of the latter is carriedfree by the arm G y resting on standard r placed outside the pole trackT.

Between the lower pair of rods'g g of the traveling frame B travels thecarriage 'w',

and on the upper rods g g travels the. car-' riage w. Both carriagesarefirmly connected to the cord U and the transfer arm of the pantographP engages the lower carriage w. I

brought to the proper tension. The forked end of the pantograph engagesa pin 10 (Fig. 5) secured under the carriage w.

The upper carriage w carried by the rollers q (Figs. 7 and 8) isprovided with a clamp ing device, consisting of the arm p and the cheekp engaging under the angular end of the arm and which cheek can be setby the screw 12*. Between the parts p and p is clamped the cord Uwhereby the carriage is firmly connected to the cord in the adjustmentrequired at the time.

The detachable connection of the carriage, enabling the latter to beconnected to the cord in any position on the traveling frame, isnecessary for enabling the transfer of drawings of diminishedreproduction to be joined to one another. A change of position of thepiece to be engraved which may be necessary in the direction at rightangles to the travel of the carriage is attained by moving or slidingthe carriage S.

To engrave printing plates the upper carriage carries the engravingapparatus with the graver or burin 22, which as known is actuated bylever a2 and electromagnets m, which are connected by conducting wireswith the tracer fof the pantograph. For the exact setting of the prickeror graver a sight tube y a with a cross of threads is provided, throughwhich the pricker or pencil can be set exactly on the required point ofthe printing plate where a joining or addition to the drawing has to bemade in those cases where several diminished pictures are to be joinedto one another.

In the plan view Fig. 1 at one side of the printing plate D isreproduced the negative or reverse representation of a letter on thedrawing z, such negative being produced when the tracer of thepantograph travels over the picture of the drawing, the traveling framefollowing the movements back and forth of the connecting pantograph arm,while said arm by means of the cord moves the carriage to the right orleft. The move ment of the picker resulting from these combinedmovements produces the negative. To give a view of the lower carriage wthe printing plate is broken through at one part and the line of thedotted letter indicates the path described in space by the pointconnecting the pantograph and carriage.

To use the machine for cutting or shaping, the cord is connected withanother carriage traveling on the upper rods, such other carriage havingcheeks for clamping the blank. In this case then the blank is moved bythe pantograph and the cutter or pricker is in fixed position, beingonly actuated as required for work and being adjustable in heightaccording to the required depth of the work.

The cutter or sh aper can in this case be variously applied and in Fig.t is shown an example of a cutting arrangement, the cutter o in abracket like support being rotated by means of a cord and spindle v Thespindle is vertically adjustable and can be adjusted for the properworking depth of the cutter by a special lever system and at the sametime actuated by cord connection '0 z. A pull on cord 0 zwill carry thecutter to the blank, while a counter weight will move the cutter away assoon as the cord is released. It is understood, that several stamps of amark can be cut simultaneously, it several cutting spindles are mounted,as also blanks secured in the carriage w.

The pantograph is constructed for transfers equal in size to theoriginal, as also for desired reductions, and can be adjusted tocorrespond to the required work. The adjustable joints of the pantographturn in centers and bearingsof steel, which material in fact is used forall movable parts of the machine. As for the other parts, especially thetraveling frame, aluminium is advantageously employed.

WVhat I claim as new, and desire to secure by Letters Patent, is-

l. A graying or cutting machine comprising a pantograph, combined with atraveling frame provided with pulleys and an endless .cord on thepulleys, one portion of the cord being connected to an arm of thepantograph "and having its opposite portion provided with a carriagemade to travel transversely to the travel of the t'rameand provided witha pricker or blank substantially as described.

2. A graving or cutting machine compris ing a pantograph, combined witha traveling frame provided with pulleys, oppositely located carriages onthe frame and an endless cord on the pulleys connected with thecarriages, oue of said carriages being adjustably connected to the cord,and said pantograph having an arm connected to one of said carriagessubstantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

WILLIBALD MERL. Witnesses:

CHARLES H. DAY, WM. I'IAUPT.

